package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.annotation.AutoFill;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.DishDTO;
import com.sky.dto.DishPageQueryDTO;
import com.sky.entity.Dish;
import com.sky.entity.DishFlavor;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.DishFlavorMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealDishMapper;
import com.sky.result.PageResult;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.ArrayList;
import java.util.List;

@Service
@Slf4j
public class DishServiceImpl implements DishService {
    @Autowired
    private DishMapper dishMapper;
    @Autowired
    private DishFlavorMapper dishFlavorMapper;
    @Autowired
    private SetmealDishMapper setmealDishMapper;
    @Override
    @Transactional
    public void saveWithFlavor(DishDTO dishDTO) {
        Dish dish = new Dish();
        BeanUtils.copyProperties(dishDTO,dish);
        //增加菜品
        dishMapper.insert(dish);

        //获取菜品id
        Long dishId = dish.getId();

        //插入口味
        List<DishFlavor> flavors = dishDTO.getFlavors();
        if(dishDTO.getFlavors()!=null || !dishDTO.getFlavors().isEmpty()){
            //向口味表插入

            for (DishFlavor flavor : flavors) {

                flavor.setDishId(dishId);
            }
            dishFlavorMapper.insertBatch(flavors);
        }

    }

    @Override
    public PageResult pageQuery(DishPageQueryDTO dishPageQueryDTO) {
        PageHelper.startPage(dishPageQueryDTO.getPage(),dishPageQueryDTO.getPageSize());

        Page<DishVO> page = dishMapper.pageQuery(dishPageQueryDTO);

        return new PageResult(page.getTotal(),page.getResult());
    }

    @Override
    public void delete(List<Long> ids) {
        //判断能否删除--是否有关联的套餐
        List<Long> setmealIds = setmealDishMapper.selectByDishId(ids);
        if(!setmealIds.isEmpty()){
            throw new DeletionNotAllowedException(MessageConstant.DISH_BE_RELATED_BY_SETMEAL);
        }
        //判断是否删除--启售状态不可删除
        for (Long id : ids) {
            Dish dish = dishMapper.selectById(id);
            if(dish.getStatus()== StatusConstant.ENABLE)
                throw new DeletionNotAllowedException(MessageConstant.DISH_ON_SALE);
        }
        //删除菜品
        /*for (Long id : ids) {
            dishMapper.deleteById(id);
            //删除口味
            dishFlavorMapper.deleteByDishId(id);
        }*/
        dishMapper.deleteByIds(ids);

        dishFlavorMapper.deleteByDishIds(ids);


    }

    @Override
    public DishVO getByIdWithFlavor(Long id) {
        Dish dish = dishMapper.getById(id);

        List<DishFlavor> dishFlavors = dishFlavorMapper.getByDishId(id);
        DishVO dishVO = new DishVO();
        BeanUtils.copyProperties(dish,dishVO);
        dishVO.setFlavors(dishFlavors);
        return dishVO;
    }

    @Override
    public void updateWithFlavor(DishDTO dishDTO) {
        Dish dish = new Dish();
        BeanUtils.copyProperties(dishDTO,dish);
        //修改菜品
        dishMapper.update(dish);
        //修改口味
        List<DishFlavor> flavors = dishDTO.getFlavors();
        if(dishDTO.getFlavors()!=null || !dishDTO.getFlavors().isEmpty()){
            Long dishId = dish.getId();
            //删除口味
            dishFlavorMapper.deleteByDishId(dishId);
            //向口味表插入

            for (DishFlavor flavor : flavors) {

                flavor.setDishId(dishId);
            }
            //插入口味
            dishFlavorMapper.insertBatch(flavors);
        }
    }

    @Override
    public List<Dish> getByCategoryId(Long categoryId) {
        List<Dish> dishes = dishMapper.getByCategoryId(categoryId);
        return dishes;
    }

    @Override
    public void startOrStop(Long id, Integer status) {
        Dish dish = new Dish();
        dish.setId(id);
        dish.setStatus(status);
        dishMapper.update(dish);
    }

    /**
     * 条件查询菜品和口味
     * @param dish
     * @return
     */
    public List<DishVO> listWithFlavor(Dish dish) {
        List<Dish> dishList = dishMapper.getByCategoryIdWithStatus(dish);

        List<DishVO> dishVOList = new ArrayList<>();

        for (Dish d : dishList) {
            DishVO dishVO = new DishVO();
            BeanUtils.copyProperties(d,dishVO);

            //根据菜品id查询对应的口味
            List<DishFlavor> flavors = dishFlavorMapper.getByDishId(d.getId());

            dishVO.setFlavors(flavors);
            dishVOList.add(dishVO);
        }

        return dishVOList;
    }
}
